215716631357313 has 24 divisors (see below), whose sum is σ = 311888170332648. Its totient is φ = 143673822842112.

The previous prime is 215716631357287. The next prime is 215716631357407. The reversal of 215716631357313 is 313753136617512.

215716631357313 is a `hidden beast` number, since 2 + 1 + 5 + 7 + 1 + 6 + 6 + 313 + 5 + 7 + 313 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 284454755649 + 215432176601664 = 533343^2 + 14677608^2 .

It is not a de Polignac number, because 215716631357313 - 2⁸ = 215716631357057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 215716631357313.

It is not an unprimeable number, because it can be changed into a prime (215716631357113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74926095 + ... + 77751867.

It is an arithmetic number, because the mean of its divisors is an integer number (12995340430527).

Almost surely, 2^{215716631357313} is an apocalyptic number.

It is an amenable number.

215716631357313 is a deficient number, since it is larger than the sum of its proper divisors (96171538975335).

215716631357313 is a wasteful number, since it uses less digits than its factorization.

215716631357313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833873 (or 2833870 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 54.

The spelling of 215716631357313 in words is "two hundred fifteen trillion, seven hundred sixteen billion, six hundred thirty-one million, three hundred fifty-seven thousand, three hundred thirteen".